A two-loop five-gluon helicity amplitude in QCD

TY - JOUR

T1 - A two-loop five-gluon helicity amplitude in QCD

AU - David Badger, Simon

AU - Frellesvig, Hjalte Axel

AU - Zhang, Yang

PY - 2013/12/9

Y1 - 2013/12/9

N2 - We compute the planar part of the two-loop five gluon amplitude with all helicities positive. To perform the calculation we develop a D-dimensional generalized unitarity procedure allowing us to reconstruct the amplitude by cutting into products of six-dimensional trees. We find a compact form for the integrand which only requires topologies with six or more propagators. We perform cross checks of the universal infra-red structure using numerical integration techniques.

AB - We compute the planar part of the two-loop five gluon amplitude with all helicities positive. To perform the calculation we develop a D-dimensional generalized unitarity procedure allowing us to reconstruct the amplitude by cutting into products of six-dimensional trees. We find a compact form for the integrand which only requires topologies with six or more propagators. We perform cross checks of the universal infra-red structure using numerical integration techniques.

U2 - 10.1007/jhep12(2013)045

DO - 10.1007/jhep12(2013)045

M3 - Journal article

SN - 1126-6708

VL - 2013

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

IS - 12

M1 - 045

ER -